[Assess learners' ability to apply life cycle assessment (LCA) methods to compare environmental impacts of common building insulation options (e.g., fiberglass, mineral wool, cellulose, rigid foam, natural fibers). Test scope includes defining functional units and system boundaries (cradle-to-gate vs cradle-to-grave), compiling life cycle inventory data, selecting relevant impact categories (global warming potential, embodied energy, water use, toxicity), conducting basic uncertainty and sensitivity analyses, interpreting comparative results and trade-offs, and recommending materials or mitigation strategies informed by LCA findings.]